Knife holder



FIG. 1 is a side elevation view of a knife holder showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a front perspective view thereof.

The ornamental design for a knife holder, as shown. 